TPS54040ADGQ

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TPS54040ADGQ is a type of DC-DC switching regulator, specifically a buck converter – an integrated step-down regulator. It is designed to replace low-efficiency linear regulators and contain within a small package an integrated high-side switch and synchronous MOSFETs. The switching regulator is ideal for applications such as with portable electronics and battery-powered systems, where cost, size and power management are vital.

Application Field

The TPS54040ADGQ DC-DC switching regulator offers excellent power conversion capabilities for in applications where it is required to step-down the input voltage. It is typically used in portable electronic devices such as laptop computer systems, portable media players, and other battery powered applications. Its wide input voltage range makes it well suited for automotive applications, such as main power management for in-vehicle infotainment systems, as well as diesel injection and exhaust applications. It is also suitable for use in other applications like digital power supplies and industrial control systems. Its low quiescent current, startup current and low dropout voltage make it suitable for a wide variety of power supply design requirements.

Working Principle

The TPS54040ADGQ DC-DC switching regulator contains a voltage regulator, a driver, and a synchronous MOSFET to allow the converter to switch at a frequency determined by an internal oscillator that is determined by the input voltage. The converter has three operating modes: Skip mode, Pulse-skipping mode and PWM mode. The converter provides a regulated output voltage when it is in operation. The output voltage is determined by a resistor divider, and the external feedback control is used to ensure that the output voltage remains stable. The converter also has an enable pin that can be used to turn the converter off when it is not in use.

The TPS54040ADGQ DC-DC switching regulator provides an internal current-limit circuit that limits the peak switch current in order to prevent harmful current surges. The converter also has an over-current and over temperature protection system. The protection system will shut down the converter when it detects an over-current or over-temperature condition. In addition, the TPS54040ADGQ DC-DC switching regulator provides fault monitoring to detect faults in the system and log them for further analysis.

The TPS54040ADGQ DC-DC switching regulator is capable of delivering an output current of up to 40A and a maximum output voltage of 40V. The adjustable switching frequency allows for optimal efficiency, and the synchronous MOSFETs provide low output ripple and high noise immunity. The wide input voltage range makes the TPS54040ADGQ DC-DC switching regulator an ideal choice for a variety of applications.

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